Multi-DoF Interface Synchronization of Real-Time-Hybrid-Tests Using a Recursive-Least-Squares Adaption Law: A Numerical Evaluation

Bartl, Andreas; Mayet, Johannes; Mahdiabadi, Morteza Karamooz; Rixen, Daniel J.

doi:10.1007/978-3-319-29763-7_2

Cited by 4 publications

(1 citation statement)

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“…One of the most popular is the polynomial forward prediction algorithm [22] with its variants [23], which seeks a least-square best fit of the response of the numerical substructure and uses it to extrapolate into the future and generate a command signal capable of compensating the actuator delay. More recently, feedforward schemes based on models of the specific RTHS set-up have been gaining ground, as they promise higher compensation accuracy [24], wider operational bandwidths [25], and/or to eliminate the risk of instabilities altogether [26].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

et al. 2020

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Real-Time Hybrid Simulation (RTHS) is an experimental framework that allows the testing of components or substructures under realistic, dynamic boundary conditions, by imposing the reactions calculated from a model of the rest of the assembly through one or more actuators. In the context of rapid prototyping of mechanical components, RTHS could be used to explore the design space of a device while at the same time physically validating its interaction with other components of the final assembly from the early stages of the design-to-production cycle.In this work, RTHS was applied for the first time to the investigation of aerodynamic gust loading alleviation devices in a highly flexible strut-braced wing. The model wing was taken as the physical substructure and tested in a low-speed wind tunnel equipped with gust generators. The load alleviation device was simulated through a real-time feedforward-feedback controller, and its response imposed via an electro-mechanical

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Section: Introductionmentioning

confidence: 99%

Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

et al. 2020

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Stability Issues in Hardware‐in‐the‐Loop Tests of Flexible Components

Bartl

Insam

Rixen

2018

Proc Appl Math and Mech

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The well-known Hardware-in-the-Loop (HiL) paradigm can be applied to numerous engineering problems to test components of complex systems and their dynamical effects under realistic boundary conditions. The system is split into a virtual component and a physical testbed. Coupling both with a control system makes it possible to replicate the full system's dynamics. However, the system may exhibit stability problems, depending on dead times, actuator dynamics and dynamical properties of the test specimen. In this contribution, the properties of a simple lumped mass system and their effects on stabilty and accuracy are investigated.

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Real-Time Hybrid Testing: Challenges and Experiences from a Teaching Point of View

Hochrainer

2018

Topics in Modal Analysis &Amp; Testing, Volume 9

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Multi-DoF Interface Synchronization of Real-Time-Hybrid-Tests Using a Recursive-Least-Squares Adaption Law: A Numerical Evaluation

Cited by 4 publications

References 20 publications

Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

Stability Issues in Hardware‐in‐the‐Loop Tests of Flexible Components

Real-Time Hybrid Testing: Challenges and Experiences from a Teaching Point of View

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